Antenna device



FIG. 1 is a front elevational view of an antenna device according to our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a tope perspective view thereof seen from a rear side thereof;

FIG. 8 is a tope perspective view thereof seen from an upper displaced side thereof;

FIG. 9 is a cross section view thereof taken across line AA' in FIG. 6; and,

FIG. 10 is a cross section view thereof taken across line BB' in FIG. 6.

The antenna device is connected to, for instance, a bearing measurement apparatus comprising a global positioning system (GPS) receiver and used in a moving body such as a ship. The antenna device comprises a plurality of antennas. The bearing measurement apparatus measures phase differences between signals supplied from the plurality of antennas receiving signals transmitted by GPS satellites to provide a bearing. The antenna device is electrically coupled to an indicator displaying a measured bearing.

As shown in the drawings, the antenna device comprises an upper antenna housing part in a form of flat shape and a lower trunk part supporting the antenna housing part. On the upper surface of the antenna housing part, there are formed at a forward point and a backward point projected tips used in installing the antenna device in a ship. In the trunk part, there is formed a space for keeping signal lines therein for connecting the antenna device and the indicator. 

The ornamental design for an antenna device, as shown and described. 